tsarnaev, and when they did, by the way, he had a bullet hole through his throat and out the back of his neck. that's why he can't talk to the cops. apparently he's giving written answers. his brother of course, died, was shot head to toe. that's 200 different--at least it hundred shells on the ground after that gun battle. it's amazing that he survived. the question is could we have caught them before all of this if we had the right the surveillance? well, it's interesting because we spent about $3.2 million on that industry, and we've got 30 million surveillance cameras according to research, throughout the united states. now that's an awful lot of cameras. but in boston they say that there is, compared to other cities, not that many. 655 cameras that are operated by the city and of that they're mainly in the subway system. in new york, you have 6,000. in london you have 400,000 cameras operated by the government but crimes solved per thousand cameras in britain is only one per thousand. those don't seem like great numbers. and of course it has down sides. let me bring my principal